Seiko Cal. 0778 - 550

This Spring Drive model from 1981 features a 41mm PVD Black case. It features a Blue Sunburst dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-d9537dc76602]

Also known as: Tuna, Bellmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

14.3mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

17j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1981

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